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Date:      Mon, 6 Mar 2006 13:49:31 -0300
From:      JoaoBR <joao@matik.com.br>
To:        freebsd-amd64@freebsd.org
Subject:   SMP and IP_PREEMPTION
Message-ID:  <200603061349.32133.joao@matik.com.br>

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Hi
I would like to here your opinion about a problem I may have.

I experience sudden reboot, no panic, no message at all on SMP systems=20
(releng_6 up-to-date) when the kernel is compiled with

PREEMPTION
IPI_PREEMPTION
SMP
4BSD


Appearently the reboot occures when the system goes to use almost 2GB of RA=
M.

I am not so sure but appearently the problem is less with ULE and seems to=
=20
disappear with ULE and without IPI_PREEMPTION and the system runs up to=20
almost 4Gb normally.

The server are dedicated cache (squid) server

Is this problem and "solution" only a impression or is there any reason or=
=20
fact some knows?

thank's
Jo=E3o







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